Term Loan - Schedule of Maturities of Outstanding Principal of Term Loan (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Debt Disclosure [Abstract] | ||
| 2017 | ||
| 2018 | ||
| 2019 | 10,079 | |
| 2020 | 13,439 | |
| 2021 | 3,680 | |
| Total principal, PIK interest and facility fee due | 27,198 | |
| Less: discount on term loan | (749) | |
| Total term loan | $ 26,449 | $ 24,859 |